Selected Control Chart Systems Based on the Reject Population.
ARMY MATERIEL COMMAND TEXARKANA TEX INTERN TRAINING CENTER
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Over the years quality control has played an important role in both industry and government. To maintain satisfactory output from a production process, the process is monitored through the construction of control charts. This paper is mainly concerned with one of these charting techniques that is, based on reject or out of control components. This paper develops X ave, R, and Cusum charts using the reject population, both above and below an upper and lower specification limit. A cost analysis is done to show use of the rejects in X ave charting is an economical one. A process has been simulated to analyze the application of the rejects to X ave, R, and Cusum charts. It was found that, in using unsymmetric specification limits, the reject population provided a more sensitive and economical X ave chart. The method also proved useful in Cusum charting, however, further investigation is needed in its application to R charting.
- Manufacturing and Industrial Engineering and Control of Production Systems